28.1.7 Notes on Spanning Tree Protocols
- <Structure of this section>
(1) Understanding CPU Overload
If the CPU is overloaded, the BPDUs sent and received by the Switch are discarded, a timeout message might be output, the topology might change, and communication might be temporarily cut off.
(2) Configuration Commands with VLAN Down Settings
When the no spanning-tree disable configuration command is used to enable the Spanning Tree functionality for the Switch, all VLANs temporarily go down.